Washer in spin vibrating violently

Brand:whirlpool
Model Number:WTW4955HW1
Main Symptom:vibration
What happens & when:vibrates violently in spin mode

Error Code (if any):
Parts or tests already tried:
Photos / video link:

Ensure the machine is level with all four feet firmly on the floor. Then check or replace the suspension rods (dampers). Link to part below:

W11217817 Suspension Rod Kit | Genuine Whirlpool OEM In Stock